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Removing genes from molecules of DNA requires the use of special
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To seal the cut fragments of DNA together, an enzyme called _____ is used.
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NS105
Chapter 13
| Question | Answer |
|---|---|
| Removing genes from molecules of DNA requires the use of special | restriction enzymes. |
| To seal the cut fragments of DNA together, an enzyme called _____ is used. | ligase |
| Enzymes that cut DNA at specific sequences of bases are called | restriction endonucleases |
| A friend asks you a question after your biology class. "What is genetic engineering?" You answer, | Genetic engineering is moving genes from one organism to another. |
| Gentetic engineering in agriculture has been employed to make crops | resistent to pests, resistent to certain herbicides, and more nutritious. |
| Crop plants are made resistent to insect pests by | inserting a gene from bacteria that secrete Bt into the plant. |
| Glyphosate, the active ingredient in the herbicide RoundUp, is a good choice for engineering plants to be resistent to because, | it is a powerful herbicide, it is readily biodegradable, and humans are not affected by it. |
| "Golden" rice is so-named because it contains | vitamin A and iron |
| A number of human genes have been inserted into bacteria to produce useful human proteins. | Hemoglobin is not one of them. |
| of what benefit is the metallothionin gene that is inserted into golden rice genome? | to supply extra sulfur to increase iron uptake. |
| what is incorrect about genetically modified crops | they are not allowed to be grown in the U.S. |
| Which is incorrect about restriction enzymes? | hey are found in bacteria and eukaryotes. |
| one disease in which gene therapy was used, but not successfully yet is | cystic fibrosis |
| scientists in Scotland figured out a novel method to clone cells successfully. It involved | using an egg and a nucleus that were at the same stage of the cell cycle. |
| Ian Wilmut successfully cloned Dolly the sheep from a fully differentiated sheep cell. This type of cloning is called | reproductive cloning |
| genomic imprinting works by | blocking the cell's ability to read certain genes. |
| a clear distinction between therapeutic cloning and reproductive cloning is that | therapeutic cloning involves the eventual destruction of the of the embryo, whereas reproductive cloning doesn't. |
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